| 摘要 |
PURPOSE:To sufficiently exhibit the characteristics of the lubricant by specifying the shape of the spiral groove where the solid lubricant is embedded and fixed. CONSTITUTION:In a cylindrical bearing, the solid lubricant is embedded in a plurality of spiral grooves R1 and R2 formed in the inner circumferential surface, and a plurality of spiral grooves R1 are formed rising toward the right with the angle theta1 between 0 deg. and 45 deg. relative to the reference line L. A plurality of spiral grooves Re are formed rising toward the left in a crossing manner with the angle 8. between 0 deg. and 45 deg. relative to the reference line L, and the line segment connecting the shorter diagonals of the parallelogram to be formed by connecting the intersections between the adjacent spiral groove R1 and the adjacent spiral groove R. crossing with the adjacent spiral groove R1 makes an angle theta3 which is below 90 deg. relative to the reference line L, and in this cylindrical bearing, the solid lubricant is embedded and fixed in the inner circumferential surface. |
